Storage-battery conductor or support.



WIFLLIAM MORRISON, OF DES MOINES, IOWA.

STORAGEQBATTERY CONDUCTOR ORSUPPORT.

No Drawing.

Specification of Letters Patent. Application filed. February 24,1912.Serial No. 673,704.

Patented Apr. 2, 1912.

"To all whom it may concern:

Be it known that I, WILLIAM MORRISON, a citizen of the United States,residing at Des Moines, in the county of Polk and-State. of Iowa, haveinvented certain new and useful Improvements in Storage-BatteryConductors or Supports, of whichthe followingis lead storage batteries.

:1 specification. I

This invention 1s a grid or other conductor= or support for the activematerial of monly consist of alloys of lead and antimony, to which asmall percentage of tin is sometimes added. The antimony hardens andstiflens the grid, but, by reason of its coarselycrystalline character,renders the grid porous, permeable to the battery solution and subjectto internal chemical and electrochemical attack. The present inventionis an alloy for such grids, consisting of lead, a hardening metal ormetals, and a member of the periodic sulfur group having an atomicweight higher than that of sulfur, to wit, selenium or tellurium. Theaddition of either of these elements-to the usual lead-antimony alloymakes it finegrained, dense, non-porous, and resistant to attackin thebattery. Furthermore these two elements, being ofelectronegative-character, will remain 1n the positive-pole grids duringthe charging and peroxidation of the active material, being veryslightly soluble in a solution of sulfuric acid, precipitated bysulfurous acid, and, in so far as they dissolve, forming ions whichremain at the anode.

These grids c'om- I The alloy maybe made in various ways,

usually by first forming an alloy of anti mony and selenium or telluriumand then adding the lead. As some of the selenium or tellurium is apt toburn out of the finished alloy during the .casting of the grids, it isdesirable, in practice, to examine the freshly-east grids from time totime durin the casting operation to determine that they containsuflicient selenium ortellurium to give them the desiredcharacteristics. I claim I 1. A. storage-battery conductor or support,consisting of lead, a member of the periodic sulfur group having anatomic weight higher than that of sulfur, and another metal.

-2. A' storage-battery conductor or support, consisting of lead, amember of the periodic sulfur group havi an atomic Weight higher thanthat of sul r, and other metals.

3. A storage-battery conductor or support, consisting of lead, a memberof the periodic sulfur group having an atomic weight higher than that ofsulfur, and antimony.

In testimonywhereof Iaflix my signature in presence of two witnesses.

WILLIAM MORRISON- VVit-nesses p EUGENE A. BYRNES,

C. W. FOWLER.

